Surviving Battles
The easiest way to survive a long battle in any of the single player modes is to equip Health Boost 2 or 3, and a blaster rifle. The Health Boost will add a multiplier to your health bar and the blaster rifle has a large magazine capacity and fair rate of fire. The best use of the rifle is in ground engagements, where its accuracy and medium range will allow you to to weaken an enemy from a distance and finish him off as he gets close.